A psychological novel was a novel that used the psychological description of the characters as the main technique to portray the inner world of the characters to show the plot of the story. In psychological novels, the readers could deeply understand the thoughts and emotions of the characters, feel the inner struggles and contradictions of the characters, as well as their choices and actions in the face of difficulties. Psychological novels usually involved the complexity of the character's heart and the exploration of human nature. They usually used the conflict and transformation of the character's heart as the main plot clue to construct a story full of emotion and tension.